CREATE TABLE [dbo].[tb_LicenciasporRoles]
(
[IdLicencia] [int] NULL,
[IdRol] [int] NULL
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[tb_LicenciasporRoles] ADD CONSTRAINT [IX_tb_LicenciasporRoles] UNIQUE NONCLUSTERED  ([IdLicencia], [IdRol]) ON [PRIMARY]
GO
